Question

What are the major pollutants emitted from the exhaust due to incomplete combustion?

(a) carbon monoxide

(b) hydrocarbons

(c) oxides of nitrogen

(d) all of the mentioned

I got this question during an interview for a job.

I need to ask this question from Engine Emissions topic in division Engine Emissions and their Control of IC Engine

Answer 1

The correct answer is:

(d) all of the mentioned

Incomplete combustion in an engine can lead to the emission of several major pollutants, including:

• Carbon monoxide (CO): Produced when there is insufficient oxygen to fully oxidize carbon in the fuel.
• Hydrocarbons (HC): Unburned or partially burned fuel components that escape through the exhaust.
• Oxides of nitrogen (NOx): Formed at high temperatures during combustion, primarily due to the reaction between nitrogen and oxygen in the air.

Each of these pollutants is a result of inefficient or incomplete combustion processes in internal combustion engines.